Conductor clamp



No'v. 16, 1937.

w. H. BURLESON CONDUCTOR CLAMP Filed July 3, 1955 Patented Nov. 16, 1937 NT OFFICE ooNDUc'ron. CLAMP Wade H. Burleson, Mansfield,l Ohio, assigner to 4 The Ohio Brass Company, Mansfield, Ohio, a corporation of New Jersey l Y Application July 3, 1935, Serial No. 29,682/r 6 Claims.

My invention relates to supports and clamps for conductors. I p

One object of my invention is to provi-de a support and clamp which will be simple and economical in construction and application, and adjustable to various sizes of conductors and which may be attached to a supporting structure.

Other objects of my invention will appear as the invention is set forth in the specification. The activity on the part of power transmission companies in supplying the rural districts with electric power has created a demand for simple, efficient and inexpensive devices for supporting A and clamping conductors. l5 These devices are used mainly in connection with low voltage conductors leading from the step-down transformers to the customers service pole, commonlydesignated as secondary circuits. My invention resides in the new and novel 26 construction, combination and relation of the various parts hereinafter described and shown in the accompanying drawing.

In the drawingz- Y Fig. 1 is a face view inelevation of my invention as vapplied to a wood supporting structure and in turn supporting a cable. Fig. 2 is a View in partial section on the line 2-2 of Fig. 1.

Fig. 3 is a back view of the clamping member x shown inl Fig. 1. 'Y Y Fig. 4 isa front View of the body or supporting member of my invention.

Fig. 5 is a side view in elevation of a modified form of my invention as applied to a wood sup- 351 porting structure and provided with means for supporting and clamping three cables and anchoring a cable thereto. Fig. 6 is a modified form of my invention. Figs. 3 and 4 are somewhat enlarged as com- 40t pared with corresponding parts shown in Figs.

1 and 2.

As shown in Figs. 1 to 4 inclusive, I provide a body or supporting member A and a clamping memberB, also a supporting bolt C; thelattermay 45"@ be of the ordinary bolt and nut type or itV may be an ordinary lag screw, both devices being come mon in pole line construction work.

The member A comprises the body I having a saddle portion 2 with a concavo-convex cable seat 565 3 upon which is mounted a cable 4.

The body is also provided with a transverse opening 5 through Which extends the shank 6 of the bolt. The body is further supplied with pro-r jecting members 'l adapted to be seated in the 55E' wood support 8 to preventthe device rotating; these' projections may be conical, pyramidalor any other shape for interlocking with the sup-A port 8. y y

The face of the body I is also provided with 60 one or more transversely disposed 'and'sloping surfaces Sand with a transversely disposed fulcrum I which may be made a part of the member B.` f

The" cocperatingmember B comprises a body II having a curved clamping seat I2 concave both transversely and longitudinally to engage the conductorl, The body II is also provided with a transverse elongated opening I3 through which passes the shank 6 of the member C. The body II is also provided on its front and rear facesy with transversely disposed sloping surfaces I4. The upper edge of the body I I has a curved seat I which is concaved longitudinally and transversely, and also adapted tc engage with a cable on the l seat 3V of smaller diameter than the cable 4.

The clamping member B is reversible with respect to the member Aboth as to its faces and its upper and lower ends and with this arrangement the device can be made to accommodate cables of `considerably varying sizes.

v `The sloping surfaces Ill on both the front and.y

rear faces of the member B correspond with slop; ing vsurfaces 9 on the member A and the cooperating surfaces act as wedges such that when the cable 4 is in position and the nut IB is tightened the member B will be moved transversely to the member A and the'member B will be moved toward the seat 3 of the member A through the wedging action of the surfaces 9 and I4 and grip thecable 4. 'I

The fulcrum I0; acts to maintain the upper end of the clampingmember B in transverse xed relation with respect to the member A but permits the lowerA end of the member B to move inwardly or outwardly and the member B downwardly relatively to the member A for purposes of adjustment.

The device shown in Figs. 1 to 4 inclusive may be arranged for fastening to metal supports asV well as wood supports, and in such case the members 'l may be eliminated.

In the form shown in Fig. 5 the construction is quite similar to that shown in Figs. 1 to 4 inclusive, except that the device is arranged to clamp one or more cables simultaneously and comprises parts the same as those shownrin the alike.

It will be noted that in the modified form shown in Fig. 5 the clamping member B is not reversib-lebut the upper inner face of the clamping member is provided' with a plurality of transverse grooveslfl 'to receivethe cables I8 and I9 but'only one groove may be provided if advisab'le.l The. threaded projecting end of the studl 6 is provided with astrain eye 20 to which a cable such as I8 may be secured, and if desired theV cable maybe eiiiciently secured between the clamping membersV A Vand B as shown. The 'cables 4 and I8 are shown as insulated, but if dedevicejustdescribed*insofar'as the numerals areY sired they may be bare and the clamp grounded. The conductor I9 is shown as bare and may be used to ground the clamp if desired. Y

The cooperating wedging faces 9 and I4 on this form of clamp also permit of downward movement of the member B relative to the member A to grip the cable 4 when the nut I6 is tightened. It will be noted that the tightening of the nut I6 not only causes a gripping of the cable Ll but a simultaneous gripping of the cables I8 and I9.

The modification sho-wn in Fig. 6 might be termed as a simplified form of my invention in that they have simple wedging seats 3II and 3| on the body 32 and clamp 33 respectively. The latter is slotted as at 34. The nuts 35 and 36 mounted on the stem 38 permit securing the device firmly to the pole and adjusting for any looseness developing after installation and the nuts 3S and 31 permit of mounting the members 32 and 337and adjusting the same without disturbing the attachment to the pole which is not true of the other forms disclosed. The clamping of the conductors is the same as in the other forms described.

The nuts 36 and 31 contact with curved surfaces on the members 32 and 33 thus permitting better angular adjustment of the parts. The conductor between the upper end of the members 32 and 33 when present acts as a fulcrum otherwise the upper ends o1" the members engage and form a fulcrum. The nut 36 may be integral with the stem 38 if desired.

In Figs. 1 to 5 inclusive the device is simple of installation as the member C simultaneously clamps the cable or cables in place and fastens the device to the support. 'Ihe members A and B are adjustable to grip cables of greatly varying sizes.

There will be many modifications Which will suggest themselves to those skilled in the art based on the disclosure I have made and, therefore, I wish to be limited only by my claims.

I claim:-

l. A supporting and clamping device for a cable comprising in combination a body member having a grooved cable-seat at one end and a transverse opening and a wedging seat having a surface obliquely disposed to the axis of the said opening, a clamping member having a cable Vreceiving groove at one end and a transverse opening and a wedging seat having a surface obliquely disposed to they axis of the said opening to cooperate with the aforesaid surface to guide the members longitudinally relative to each other and grip the cable and fastening means extending through the openings in the aforesaid members to secure the members to a support and also effect a gripping of the cable.

2. A conductor clamp comprising a body member arranged to be mounted on a support and having an elongated projecting flange provided with a concave cable-seat, an elongated clamping member having a concave seat at one end to cooperate with the cable-seat to grip a cable, a groove at the opposite end of the clamping member cooperating with the body to receive and grip a conductor, oppositely disposed throughopenings in the members, fastening means eX- tending through the openings and arranged to draw the members towards each other and secure the members to the support and cooperating wedging seats on each member to guide the clamping member to move longitudinally relative to the body member to grip the cable positioned in the concave seats.

3. A conductor clamp comprising a body member arranged to be attached to a support and having an elongated projecting ange provided with a concave cable-seat, an elongated clamping member having a concave seat at one end to cooperate with the cable-seat to grip a cable, a groove at the opposite end of the clamping member cooperating with the body to receive and grip a conductor, fastening means to draw the members towards each other, an opening through the body member, an elongated opening through the clamping member registering with the rst opening, the openings arranged to receive the fastening means and the elongated opening permitting the members to move relative to each other and cooperating Wedging means on the members to guide the members when moved by the fastening means relative to each other to grip a cable reposing between the concave seats.

4. A cable clamping device comprising in combination a body member arranged to be attached to a support and having a grooved cable-seat at one end and a transverse opening and a wedging seat having a surface obliquely disposed to the axis of the said opening, a clamping member having a cable receiving groove at one end and a transversely disposed elongated opening and a wedging seat having a surface obliquely disposed to the axis of said opening to cooperate with the aforesaid wedging surface to guide the clamping member longitudinally and transversely relative to the body member and into engaging relation with the cable and fastening means extending through the openings in the aforesaid members to secure the members together and move the clamping member relative tothe body member to effect the gripping of the cable.

5. A conductor clampcomprising a body member arranged to be attached to a support and having an elongated projecting flange provided with a grooved cable-seat, a clamping member having a cable-seat at one end to cooperate with the body cable-seat to grip a cable, fastening means to draw the members towards each other, registering openings through the members and one opening being oblong, the openings arranged to receive the fastening means and the elongated opening permitting the members to move obliquely relative to each other and cooperatingV wedging means on the members to guide the members when moved by the fastening means relative to each other to grip a cable reposing between the concave seats.

6. A supporting clamp for a conductor comprising in combination a body member arranged to be mounted in a support, an opening through the body member, a concave-convex cable-seat at one end of the body and a fulcrum at the other end thereof, an end-for-end reversible clamping member having a slotted opening therethrough, a concave seat at each said end of the clamping member to cooperate separately with the seat on the body member to grip the cable, fastening means extending through the openings and arranged to draw the members towards each other and secure the members to the support, and cooperating wedging seats on the members to guide the clamping member to move relative to the body member to grip the cable between the body seat and either one of the seats on the clamping member.

' WADE H. BURLESON. 

